Safety spring cushion for glass



March 3, 1936. G. A. BARROWS ET AL 2,032,344

SAFETY SPRING CUSHION FOR GLASS Filed Aug. 17, 1934 INVENTORS GizoaqzFLBARROWS- CHARLES BLACKBURN Patented Mar. 3, 1936 UNITED STATES SAFETYSPRING CUSHION FOR GLASS George A. Barrows and Charles Blackburn, SantaAna, Calif.

Application August 17, 1934, Serial No. 740,234

2 Claims.

This invention is applicable to glass plates in store fronts, businessbuildings, homes etc., and may also be used with other sheet glass inany capacity.

An object of the invention is to provide a simple, easily applied unitor combination of units and to permit of their use with all sizes ofplate or other sheet glass. The units to fit and work in conjunctionwith all makes of metal sash bars as Kawneer, Zouri, Tyre or any othermake of pattern of metal sash bars, or to be used with wood stopsindependent of metal sash bars if desired.

The main object of the invention is to eliminate the breakage of glassfrom earthquake shock and from the shock or jar of trains, trucks orother causes that would have a tendency to cause rigid set glass tocrack or break, including wind pressure.

Another object of this invention is to support the glass on safetyspring cushions that will be installed under and near each right andleft hand lower corner of each light of glass with as many units placedat intermediate points between the two corners as necessary to sustainthe load that the size and. weight requires and in addition flat typebent springs will be placed at each right and left hand edge of eachlight of glass at top corners.

An object of the safety spring cushion is to absorb without shock anysettlement or movement of the glass from any sudden jar or unnaturalcondition and the object of the side springs is to eliminate any suddencontact of the glass with the framework of the building due to anymovement of the glass plate.

Other objects, advantages and features of invention may appear from theaccompanying drawing, the subjoined detailed description and theappended claims.

The accompanying drawing illustrates the invention.

Figure 1 is a view of a typical store front showing locationsdiagrammatically at which the different members of the invention may beused.

Fig. 2 is an enlarged fragmental perspective view showing the positionof the invention as used in conjunction with metal sash bars, omittingthe spring.

Fig. 3 is an enlarged side elevation detail in section of the cushionunit.

Fig. 4 is an end elevation of Fig. 3 showing a fragment of plate glassmounted therein.

Fig. 5 is a view analogous to Fig. 4 showing the cushion in a compressedposition.

Fig. 6 is a plan View of Fig. 3 looking from the underside and showingthe holes therein and lips that hold the springs in place. The plateglass and springs being omitted.

Figs. 7, 8, and 9 show diagrammatically a few 5 of the difierent shapesof the invention.

Figs. 10 and 11 show detail views of the spring cushion that may be usedat the top end of the plate glass.

Fig. 12 is a side elevation of Fig. 11. 10

Fig. 13 is a fragmental detail sectional view of a modified form of acushion that may be used at the top corners of the glass showing afragment of glass therein.

Fig. 14 is a section on line Xl4-X|4 Fig. 13. 5

Referring to Figure 1 there is shown a typical store front having plateglass 2 and 3 being constructed in the well known manner and showingenough to illustrate how the cushion unit 4 is applied to the plateglass.

The cushion unit 4 may be constructed of 22 gauge cold rolled. copper orlighter or heavier weights of copper, brass, black iron or galvanizedsheets may be used and comprises a housing 5 provided with springs 6fixed therein. 25

A cushion member 1 is mounted in the housing 5 and rests upon thesprings 6 and is of U-shaped construction to permit the glass 2 to resttherein.

Interposed between the glass 2 and bottom of the cushion member 1 is apacking 8 that permits a perfect bearing for the glass and may be ofleather, rubber, composition or other material.

To hold the springs 6 in place holes 9 are punched through the bottom I0 of the housing by a split punch and the two halves l l of the metalare turned inwardly over the bottom spring wire on two sides as shown inFigs. 3 and 6 of the drawing.

Referring to Fig. 2 there is shown a sash construction l2 of a moderntype and how the cushion unit may be applied.

Figs. 10, 11, and 13 show cushioning means to be used at the top cornersof plates to absorb shock caused by any movement of the glass orbuilding.

Fig. 10 shows means intended for use only at top of glass plates wherethey are separated by division, angle or corner bars.

Figs. 12 or 13 show means to be used at the conjunction of glass plateswith jams or frame work of building.

We claim:

1. A cushion unit for glass fronts having a housing provided withsprings therein; to hold said springs in place holes are punched throughthe bottom of said housing by a split punch and the two halves areturned inwardly over the bottom spring'wire of the springs and a Ushaped cushion member mounted on said springs and operable in saidhousing to prevent the glass from breaking when a shock occurs.

2. In a cushion unit for glass fronts having a housing provided withsprings therein; means comprising holes punched through the bottom ofsaid housing and the two halves are turned inwardly over the bottomspring wire of the springs to hold said springs in position in thehousing; a U shaped cushion member mounted in the housing and resting onsaid springs; a packing mounted in said cushion upon which rests theglass and said cushion member and glass being operable in said housingto prevent the glass from breaking when a shock occurs.

GEORGE A. BARROWS.

CHARLES BLACKBURN.

